. >> ballard: what's the range, katie? >> katie: 20 meters out. >> ballard: 20 meters out. we're closing in. >> logan: the crew is glued to the screens. pilots guide the remote- controlled vehicles towards the target some 1,500 feet below. what do you think you're going to find? >> ballard: i have my fingers crossed that it's an ancient shipwreck. >> logan: in the back of the room, archeologists stand ready to tell ballard what he may have found. >> ballard: all right, let's go find out what this puppy is. >> logan: this is the moment of discovery that still thrills bob ballard after half a century at sea. >> ballard: and the anticipation-- "what is it?" don't know. and you come in and you come in, and you think, "well, it could be this, it could be..." and then, all of a sudden, the veil of... of darkness in the deep sea, like curtains, just open, and there it is. and you see it for the first time for 2,000 years or whatever. you can get used to that. >> logan: how many times have you done that? >> ballard: lots. >> logan: what's lots? >> ballard: 100 times or more. >> log